That was my flying low at 130 through GA and TN.
Finally picked up a radar detector after several years of spirited driving in an M3 without one. Luck runs out though. 111 in a 55. On an off ramp/freeway interchange. (I65s to 440w for those around Nashville).
Not sure the Passport Max works though. Went by a dozen cops without a peep on a recent drive back from Atlanta.